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Finding the Fourth Proportional to 348,678.09, 523,014.71 and 99,360.09

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Solution

The fourth proportional to 348,678.09, 523,014.71 and 99,360.09 is: 149,039.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,678.09 : 523,014.71 = 99,360.09 : x
  2. Step 2: Convert to fraction form
    348,678.09/523,014.71 = 99,360.09/x
  3. Step 3: Cross multiply
    348,678.09x = 523,014.71 × 99,360.09
  4. Step 4: Simplify right side
    348,678.09x = 51,966,788,160.12
  5. Step 5: Solve for x
    x = 51,966,788,160.12/348,678.09
  6. Step 6: Final answer
    x = 149,039.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.